Melting polar ice sheets have raised sea levels by 11mm in the last two decades, according to a report released Thursday, the BBC News said.
The study, published in the Science Magazine, also showed that the pofalar ice sheets in Greenland and Antarctica are melting at rates three times faster than 1990s, the Washington Post said.
Since 1992, polar melting contributed around one-fifth of the overall global sea level rise, the BBC News said. This rise in sea level and cause huge impacts to coastal cities around the world, the BBC News said.
More than 20 polar research teams who worked together to create a single estimate produced the study, the BBC News said.
"Understanding how and why the ice sheets are changing today better equips us for understanding and predicting how much and in what ways they will change in the future," NASA chief scientist Waleed Abdalati said to the Washington Post.
The UN's Intergovernmental Panel on Climate Change is scheduled to release their next report in September 2013 that will expand on this issue, the BBC News said.